Highly sensitive MXene-based SO2 sensor enhanced by modification of SnO2 at room temperature

IF 3.674 4区工程技术 Q1 Engineering Applied Nanoscience Pub Date : 2024-07-16 DOI:10.1007/s13204-024-03061-y

Rui Wu, Weiwei Chen, Shuxian Liao, Jiayong Yin, Ziqing Yuan, Haoran Han, Xiangyu Liao, Yong Zhang, Yongbiao Zhai, Liangchao Guo

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Abstract

High-performance and room-temperature gas sensors are ideal for industrial production and environmental detection. Enhancing gas-detection capability by the use of highly conductive MXene in conjunction with metal oxide materials is a potential approach. In this work, we have prepared a gas-sensing composite device based on SnO₂/V₂CT_x nanocomposites, which can be used to detect the concentration of SO₂ gas at room temperature (~ 20 ℃). This paper modified two-dimensional (2D) V₂CT_x MXene with SnO₂ nanoparticles by electrostatic binding method to synthesize SnO₂/V₂CT_x composite nanomaterials. The experimental results show that at room temperature, the addition of SnO₂ nanoparticles can markedly improve the gas-sensing response (from 66 to 83%) characteristics of pure V₂CT_x to SO₂. The gas sensitivity of SnO₂/V₂CT_x MXene nanocomposites can reach 83%, and its response/recovery time is 98 s/81 s under 10 ppm SO₂. The gas-sensing composite devices made of SnO₂/V₂CT_x composite nanomaterials also show good selectivity and application prospects.

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室温下通过改性二氧化锡增强的高灵敏度 MXene 基二氧化硫传感器

高性能室温气体传感器是工业生产和环境检测的理想选择。通过将高导电性 MXene 与金属氧化物材料结合使用来增强气体检测能力是一种可行的方法。在这项工作中，我们制备了一种基于 SnO2/V2CTx 纳米复合材料的气体传感复合器件，可用于检测室温（~ 20 ℃）下的二氧化硫气体浓度。本文通过静电结合的方法将二维（2D）V2CTx MXene与SnO2纳米粒子修饰，合成了SnO2/V2CTx复合纳米材料。实验结果表明，在室温条件下，SnO2 纳米粒子的加入能明显改善纯 V2CTx 对二氧化硫的气敏响应特性（从 66% 提高到 83%）。SnO2/V2CTx MXene 纳米复合材料的气体灵敏度可达 83%，在 10 ppm 二氧化硫条件下的响应/恢复时间分别为 98 秒/81 秒。由 SnO2/V2CTx 复合纳米材料制成的气体传感复合器件也显示出良好的选择性和应用前景。

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来源期刊

Applied Nanoscience Materials Science-Materials Science (miscellaneous)

CiteScore

7.10

自引率

0.00%

发文量

430

期刊介绍： Applied Nanoscience is a hybrid journal that publishes original articles about state of the art nanoscience and the application of emerging nanotechnologies to areas fundamental to building technologically advanced and sustainable civilization, including areas as diverse as water science, advanced materials, energy, electronics, environmental science and medicine. The journal accepts original and review articles as well as book reviews for publication. All the manuscripts are single-blind peer-reviewed for scientific quality and acceptance.